03-22-2015, 08:08 PM
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#21
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
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__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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03-22-2015, 08:27 PM
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#22
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
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__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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03-22-2015, 11:27 PM
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#23
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Quote:
Originally Posted by Paul
I've heard new front CATs are $4000 each....
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I can get new Porsche Boxster 986 / S NHP 200 Cells Exhaust Headers for $1,244.90. That includes both sides and shipping.
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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03-23-2015, 02:01 AM
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#24
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by Paul
I've heard new front CATs are $4000 each....
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You can do better than that price. And the engine costs one Hell of lot more than that.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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03-23-2015, 03:50 AM
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#25
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Registered User
Join Date: Dec 2012
Location: FL
Posts: 4,143
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New factory cats are crazy expensive. I have a set of low mileage takeoffs for $200 from a guy that installed headers. When mine go I will swap them.out and hopefully get a long life out of them.
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03-23-2015, 07:33 AM
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#26
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Registered User
Join Date: May 2014
Location: S.California
Posts: 2,027
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There are lots of oils with high ZDDP. Excessive ZDDP will 'poison' the cats. So 'more is better' has limits.For example, Mobil 1 5-40"Turbo Diesel"has more ZDDP than regular Mobil 1.
The question is the balance in the additive package.
I linked an old comparative list some time ago from BITOG for film strength and ZDDP. Motorcraft 5-50 was surprisingly good in that comparison JGibbs was included in the list.
But there is way more to the issue than just two factors in the additive package.
11. 5W50 Castrol Edge with Syntec API SN, synthetic, formerly Castrol Syntec, black bottle = 75,409 psi
zinc = 1252 ppm
phos = 1197 ppm
ZDDP = 1200 ppm
8. 10W30 Joe Gibbs HR4 Hotrod Oil synthetic = 86,270 psi
zinc = 1247 ppm
phos = 1137 ppm
ZDDP = 1100 ppm
3. 10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi
zinc = 1472 ppm
phos = 1544 ppm
ZDDP = 1500 ppm
For the oil Geeks only:
http://speedtalk.com/forum/viewtopic.php?f=1&t=35836
http://www.intellidog.com/dieselmann/powers~1.htm
http://www.machinerylubrication.com/Read/255/oil-foam
http://www.bobistheoilguy.com/motor-oil-101/
Last edited by Gelbster; 03-26-2015 at 11:09 AM.
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03-23-2015, 08:08 AM
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#27
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Registered User
Join Date: Oct 2013
Location: Atlanta, GA
Posts: 419
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I've been buying my Joe Gibbs Racing DT40 from Summit Racing in MacDonough GA.
Once you are on their mailing list I think they'll occasionally shoot you a $20 off coupon for orders over $100. They also discount the price when you buy oil by the case. Comes to around $10 a quart (or less) that way. Also free shipping via UPS ground to anywhere in the US, but I prefer to drive down to Summit with my Boxster - makes for a nice drive (any excuse for a drive is good when you have a Boxster). 
__________________
2001 Boxster S - Speed Yellow, Black Leather, Tiptronic, Jake Raby rebuilt 3.2 with IMS Solution
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03-23-2015, 08:21 AM
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#28
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
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Quote:
Originally Posted by Gelbster
There are lots of oils with high ZDDP.
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Including Mobil 1 0W-40
__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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03-23-2015, 08:28 AM
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#29
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by lkchris
Including Mobil 1 0W-40
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While high additive levels are a good start, it takes more than just ZDDP to make a good oil.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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03-23-2015, 08:53 AM
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#30
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
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__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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03-24-2015, 03:20 AM
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#31
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Registered User
Join Date: Apr 2008
Location: Southern New jersey
Posts: 1,054
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Just because their name is plastered on race car via PAID sponsorship or contingencies doesn't mean it's the best oil. I would bet they don't run off-the-shelf street car Mobil 1.
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